Efeito sobre propriedades hidráulicas do solo de mobilizações com tração animalResultados de ensaio no NE Portugal

  1. Tomás de Figueiredo 1
  2. Aitor García-Tomillo 2
  3. Arlindo Almeida 1
  4. João Rodrigues 3
  5. António Paz- Gonzalez 2
  6. Jorge Dafonte 4
  7. João Nunes 3
  8. Zulimar Hernández 5
  9. Douglas Bandeira 2
  1. 1 Instituto Politécnico de Bragança
    info

    Instituto Politécnico de Bragança

    Bragança, Portugal

    ROR https://ror.org/00prsav78

  2. 2 Universidade da Coruña
    info

    Universidade da Coruña

    La Coruña, España

    ROR https://ror.org/01qckj285

  3. 3 APTRAN – Associação Portuguesa de Tracção Animal
  4. 4 Universidade de Santiago de Compostela
    info

    Universidade de Santiago de Compostela

    Santiago de Compostela, España

    ROR https://ror.org/030eybx10

  5. 5 Universidad Autónoma de Madrid
    info

    Universidad Autónoma de Madrid

    Madrid, España

    ROR https://ror.org/01cby8j38

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Book:
IX Congresso Ibérico de Agroengenharia: Livro de Atas
  1. José Carlos Barbosa (coord.)
  2. António Castro Ribeiro (coord.)

Publisher: Instituto Politécnico de Bragança

ISBN: 978-972-745-247-7

Year of publication: 2018

Pages: 993-1000

Congress: Congreso Ibérico de Agroingeniería y Ciencias Hortícolas (9. 2017. Braganza)

Type: Conference paper

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Abstract

This work compares the effect on soil hydraulic properties of tillage operations performed with different animal and motorized traction options. The study focus on the exploration of desiccation curves of undisturbed soil samples, taken in an experiment at Vale de Frades, NE Portugal. Treatments were applied in two passages in contiguous plots (30 m x 3 m), in a flat agricultural field with medium texture soil, poor in organic matter: 1,Tractor with cultivator; 2, Cows with plow; 3, Cows with cultivator; 4, Donkeys with plow; 5, Donkeys with cultivator (animals in pairs). Thirty undisturbed soil samples were collected in the 0-5 cm layer (3 per plot) in 100 cm3 cylinders before and after treatments. In the laboratory, samples were kept in the cylinders, saturated (2 days) and submitted to a permeability test (4 days), after which, avoiding evaporation from cylinders top, their weight loss was monitored over 11 days. Saturated permeability, bulk density, total porosity, moisture content and drainage porosity in increasing time intervals were calculated. The exponential desiccation curveswere obtained by regression. Significant differences between treatments were detected in moisture content up to 4 days of desiccation, with lower values in the tractor as compared to treatments with animal traction.The treatments led to the reduction of total porosity, permeability, retention porosity after 24h (significant), the tractor treatment imposing the most relevant impacts. Results are promising as a contribution to stimulating future research on animal traction and its application in mountain farming systems.

Data source: Dialnet